CN105807151A - Method for recognizing abnormality of IGBT module cooling system in real time - Google Patents
Method for recognizing abnormality of IGBT module cooling system in real time Download PDFInfo
- Publication number
- CN105807151A CN105807151A CN201410852963.4A CN201410852963A CN105807151A CN 105807151 A CN105807151 A CN 105807151A CN 201410852963 A CN201410852963 A CN 201410852963A CN 105807151 A CN105807151 A CN 105807151A
- Authority
- CN
- China
- Prior art keywords
- curve
- cooling system
- igbt module
- temperature rise
- real time
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Inverter Devices (AREA)
- Power Conversion In General (AREA)
Abstract
The invention discloses a method for recognizing the abnormality of an IGBT module cooling system in real time, and the method comprises the steps: testing the temperature rise coefficients of an IGBT module at all currents under the condition that the cooling system hardly has cooling liquid, and obtaining a current/temperature rise coefficient curve a; testing the temperature rise coefficients of the IGBT module at all currents under the condition that the cooling system meets the minimum requirements, and obtaining a current/temperature rise coefficient curve b; plotting the curve a and curve b in a coordinate system, setting a part above the curve a as an abnormal region A of the cooling system, setting a part below the curve b as a normal region C, and setting a part between the curve a and the curve b as an early warning region B; detecting the current and temperature rise coefficients of the IGBT module in real time, comparing the coordinate systems of the curves a and b, and recognizing the abnormality of the cooling system. The method judges whether the cooling system is abnormal or not according to different work conditions of the cooling system and the corresponding currents of the IGBT module, sets the early warning region, uploads the abnormal information, and protects a motor and an inverter from being damaged.
Description
Technical field
The present invention relates to a kind of method that Real time identification IGBT module cooling system is abnormal.
Background technology
The compound full-control type voltage driven type power semiconductor that IGBT module is made up of double pole triode and insulating gate type field effect tube, it is widely used in the power drive element in inverter.Popularizing gradually based on new-energy automobile, the IGBT module cooling system of inverter is most important part in whole automobile dynamic system, if cooling system is abnormal, the power of motor and inverter will be restricted, the performance of car load will be substantially reduced, and is also possible to damage motor and inverter time serious.Therefore a kind of can the abnormal method of Real time identification IGBT module cooling system just be particularly important, so can discovery early and solve the problem that cooling system is abnormal.
Summary of the invention
The technical problem to be solved is to provide a kind of method that Real time identification IGBT module cooling system is abnormal, this method differentiates according to different operating modes and the corresponding IGBT module size of current of cooling system, judge that whether cooling system is abnormal accordingly, and early warning is set and abnormal information is uploaded, it is to avoid the damage of motor and inverter.
For solving above-mentioned technical problem, the method for Real time identification IGBT module cooling system of the present invention exception comprises the steps:
Step one, under the obstructed coolant of cooling system or the negligible situation of coolant, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve a with curent change；
Step 2, cooling system pass into the minimum capacity coolant meeting cooling system minimum requirements but cooling air pump inoperative, the immobilising situation of coolant under, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve b with curent change；
Step 3, curve a and curve b is plotted in the same coordinate system, curve a is positioned at above curve b, and it is for cooling system prewarning area B between cooling system normal region C, curve a and curve b that setting coordinate system inner curve a is arranged above below cooling system abnormal area A, curve b；
Step 4, the electric current detecting IGBT module in real time and temperature rise coefficient, and the coordinate system of control curve a and curve b, checking in the IGBT module electric current of in real time detection on the abscissa of coordinate system, the temperature rise coefficient as detected IGBT module in real time falls into coordinate system C region and shows that cooling system is normal, fall into a-quadrant and show that cooling system is abnormal, fall into B region then provide early warning signal and carry out IGBT module downrating according to cooling system working condition.
The method abnormal due to Real time identification IGBT module cooling system of the present invention have employed technique scheme, namely this method is under the obstructed coolant of cooling system or the negligible situation of coolant, test IGBT module temperature rise coefficient under each electric current, obtains electric current/temperature rise coefficient curve a；Pass under the minimum capacity coolant and immobilising situation meeting cooling system minimum requirements at cooling system, test IGBT module temperature rise coefficient under each electric current, obtain electric current/temperature rise coefficient curve b；Curve a and curve b is plotted in the same coordinate system, and it is for cooling system prewarning area B between cooling system normal region C, curve a and curve b that setting curve a is arranged above below cooling system abnormal area A, curve b；Detecting electric current and the temperature rise coefficient of IGBT module and the coordinate system of control curve a and curve b in real time, namely recognizable cooling system is abnormal.This method differentiates according to different operating modes and the corresponding IGBT module size of current of cooling system, judges that whether cooling system is abnormal accordingly, and arranges early warning and abnormal information is uploaded, it is to avoid the damage of motor and inverter.
Accompanying drawing explanation
Below in conjunction with drawings and embodiments, the present invention is described in further detail:
Fig. 1 is coordinate system schematic diagram in the method that Real time identification IGBT module cooling system of the present invention is abnormal.
Detailed description of the invention
Embodiment is as it is shown in figure 1, the method for Real time identification IGBT module cooling system of the present invention exception comprises the steps:
Step one, under the obstructed coolant of cooling system or the negligible situation of coolant, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve a with curent change；
Step 2, cooling system pass into the minimum capacity coolant meeting cooling system minimum requirements but cooling air pump inoperative, the immobilising situation of coolant under, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve b with curent change；
Step 3, curve a and curve b is plotted in the same coordinate system, curve a is positioned at above curve b, and it is for cooling system prewarning area B between cooling system normal region C, curve a and curve b that setting coordinate system inner curve a is arranged above below cooling system abnormal area A, curve b；
Step 4, the electric current detecting IGBT module in real time and temperature rise coefficient, and the coordinate system of control curve a and curve b, checking in the IGBT module electric current of in real time detection on the abscissa of coordinate system, the temperature rise coefficient as detected IGBT module in real time falls into coordinate system C region and shows that cooling system is normal, fall into a-quadrant and show that cooling system is abnormal, fall into B region then provide early warning signal and carry out IGBT module downrating according to cooling system working condition.
Usual cooling system is mainly maintained normal operation by coolant and cooling pump, provides effective cooling for IGBT module, it is ensured that inverter and motor are properly functioning；In this method, coordinate system region A simulates the operating mode in cooling system without coolant, region B simulates the operating mode cooling down failure of pump in cooling system, region C simulates coolant and the cooling normal operating mode of pump in cooling system, by surveying electric current and the temperature rise coefficient of IGBT module, in conjunction with electric current corresponding in coordinate system, temperature rise coefficient according to actual measurement falls into certain region, the i.e. abnormal conditions of recognizable cooling system, and make corresponding process accordingly, provide early warning signal and downrating, and early warning signal can be uploaded to entire car controller, the control strategy of vehicle is adjusted by entire car controller.
This method is simple and reliable, can the unusual service condition of accurate and effective identification cooling system, it is possible to finds early and solves cooling system abnormal problem, it is to avoid causing inverter and motor damage owing to cooling system is abnormal, it is ensured that the safety that vehicle travels.
Claims (1)
1. the method that a Real time identification IGBT module cooling system is abnormal, it is characterised in that this method comprises the steps:
Step one, under the obstructed coolant of cooling system or the negligible situation of coolant, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve a with curent change；
Step 2, cooling system pass into the minimum capacity coolant meeting cooling system minimum requirements but cooling air pump inoperative, the immobilising situation of coolant under, test IGBT module temperature rise coefficient under each electric current, with electric current be abscissa, temperature rise coefficient for vertical coordinate, obtain the IGBT module temperature rise coefficient curve b with curent change；
Step 3, curve a and curve b is plotted in the same coordinate system, curve a is positioned at above curve b, and it is for cooling system prewarning area B between cooling system normal region C, curve a and curve b that setting coordinate system inner curve a is arranged above below cooling system abnormal area A, curve b；
Step 4, the electric current detecting IGBT module in real time and temperature rise coefficient, and the coordinate system of control curve a and curve b, checking in the IGBT module electric current of in real time detection on the abscissa of coordinate system, the temperature rise coefficient as detected IGBT module in real time falls into coordinate system C region and shows that cooling system is normal, fall into a-quadrant and show that cooling system is abnormal, fall into B region then provide early warning signal and carry out IGBT module downrating according to cooling system working condition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852963.4A CN105807151B (en) | 2014-12-29 | 2014-12-29 | Method for identifying abnormality of IGBT module cooling system in real time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410852963.4A CN105807151B (en) | 2014-12-29 | 2014-12-29 | Method for identifying abnormality of IGBT module cooling system in real time |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105807151A true CN105807151A (en) | 2016-07-27 |
| CN105807151B CN105807151B (en) | 2020-03-06 |
Family
ID=56420748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410852963.4A Active CN105807151B (en) | 2014-12-29 | 2014-12-29 | Method for identifying abnormality of IGBT module cooling system in real time |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105807151B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613815A (en) * | 2016-12-09 | 2018-10-02 | 上海大郡动力控制技术有限公司 | Differentiate the method for pure electric vehicle cooling system operation irregularity |
| CN108732506A (en) * | 2018-04-26 | 2018-11-02 | 合肥国轩高科动力能源有限公司 | Detection method for lithium separation of lithium ion power battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997302A (en) * | 2010-08-13 | 2011-03-30 | 乌云翔 | Method for protecting electric/electronic device of high-power converter from overhigh temperature |
| CN102243285A (en) * | 2011-05-06 | 2011-11-16 | 厦门Abb开关有限公司 | Fault detection apparatus based on temperature and current analyses, and method thereof |
| CN102623335A (en) * | 2012-03-30 | 2012-08-01 | 中国人民解放军海军工程大学 | Method for improving power density of electric energy conversion device |
| CN103812356A (en) * | 2012-11-05 | 2014-05-21 | 三菱自动车工业株式会社 | Cooling structure of inverter |
| CN203859493U (en) * | 2013-11-13 | 2014-10-01 | 特变电工股份有限公司 | Overheating protective device of a transformer |
| US20140291797A1 (en) * | 2013-03-28 | 2014-10-02 | Sanken Electric Co., Ltd. | Semiconductor Device |
-
2014
- 2014-12-29 CN CN201410852963.4A patent/CN105807151B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101997302A (en) * | 2010-08-13 | 2011-03-30 | 乌云翔 | Method for protecting electric/electronic device of high-power converter from overhigh temperature |
| CN102243285A (en) * | 2011-05-06 | 2011-11-16 | 厦门Abb开关有限公司 | Fault detection apparatus based on temperature and current analyses, and method thereof |
| CN102623335A (en) * | 2012-03-30 | 2012-08-01 | 中国人民解放军海军工程大学 | Method for improving power density of electric energy conversion device |
| CN103812356A (en) * | 2012-11-05 | 2014-05-21 | 三菱自动车工业株式会社 | Cooling structure of inverter |
| US20140291797A1 (en) * | 2013-03-28 | 2014-10-02 | Sanken Electric Co., Ltd. | Semiconductor Device |
| CN203859493U (en) * | 2013-11-13 | 2014-10-01 | 特变电工股份有限公司 | Overheating protective device of a transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108613815A (en) * | 2016-12-09 | 2018-10-02 | 上海大郡动力控制技术有限公司 | Differentiate the method for pure electric vehicle cooling system operation irregularity |
| CN108732506A (en) * | 2018-04-26 | 2018-11-02 | 合肥国轩高科动力能源有限公司 | Detection method for lithium separation of lithium ion power battery |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105807151B (en) | 2020-03-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10209145B2 (en) | Failure diagnosis method and system of temperature sensor of switch device | |
| US9482713B2 (en) | Method and system of diagnosing breakdown during pre-charging | |
| US9360515B2 (en) | Fault detection device for inverter system | |
| US10962423B2 (en) | Method for detecting interlock failure of connector in eco-friendly vehicle | |
| EP3197036B1 (en) | Power conversion device | |
| US9915693B2 (en) | System and method for diagnosing insulation-breakdown of vehicle component | |
| CN105984354A (en) | Method for reconnecting a relay in a vehicle battery management system | |
| US20160104920A1 (en) | Method for monitoring the state of a battery in a motor vehicle | |
| CN102734147B (en) | System and method for comprehensively testing performance of vacuum pumps | |
| CN112285561A (en) | Motor fault monitoring device, driving motor system and motor fault monitoring method | |
| US20210063457A1 (en) | Method for monitoring a supply system of a motor vehicle | |
| CN103457006A (en) | Cooling control method, cooling control device and cooling system of energy storage power supply | |
| KR20120061434A (en) | Fault diagnosis apparatus of thermal sensor for hybrid and electronic vehicle and method of the same | |
| CN105807151A (en) | Method for recognizing abnormality of IGBT module cooling system in real time | |
| US20130325406A1 (en) | Method and device for checking a control device | |
| CN110739902A (en) | motor temperature sensor fault processing method and device | |
| CN113054265A (en) | Battery thermal control method and system and automobile | |
| JP6767963B2 (en) | Motor control device and motor control method | |
| KR101543000B1 (en) | System and method for water temperature sensor management of green car | |
| CN108318765B (en) | Power failure diagnosis method | |
| CN109540538B (en) | Failure analysis method for passenger car cooling system | |
| KR20140026788A (en) | Flap opening and shutting control apparatus and method | |
| CN104483588A (en) | Electrical failure diagnosis method and device for relay control terminal | |
| CN111158342A (en) | Method for initializing and checking consistency of current sensor by motor controller | |
| CN104198203A (en) | Method and device for detecting operation of air-conditioners |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |